Preheat oven to 220°C/200°C fan-forced.
Line 2 large baking trays with baking paper.
Grate the carrot and zucchini and then squeeze any excess moisture out.
Pop into a large bowl.
Add the breadcrumbs, garlic, egg, sausage mince, chopped onion and sauces.
Mix well to combine.
Cut pastry sheets in half.
Place a long narrow strip of the sausage mix along the edge of the pastry.
Brush opposite edge with the beaten egg.
Roll up pastry to enclose filling and cut into thirds.
Place, seam-side down, on prepared tray.
Repeat with remaining mixture and pastry.
Brush sausage roll tops with beaten egg.
Sprinkle with sesame seeds.
Bake for 20 to 25 minutes or until golden and puffed.
Cool on tray for 5 minutes.